Run results for: InstanceOf vs String type

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_0_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.0 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 16

Operating system: iOS 16.0.3

Device Platform: Mobile

Date tested: 2 years ago

string type

10.0M/s

instanceof

3.9M/s

string type + undefined

3.5M/s

property

3.5M/s

View exact numbers

HTML Preparation code:

<script>
class TestClass {
    constructor() {
        this.a = 2;
        this.t = 'mesh';
    }
}
</script>

Script Preparation code:

var obj = new TestClass();

Tests: